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ALLOY 2017 AND 2024 RIVETS. As
mentioned in the preceding paragraph, both
these rivets are supplied in the T4
temper and must be heat treated.
These rivets must be driven within 20 minutes
after quenching or refrigerated at or below 32F
to delay the aging time 24 hours. If either time is
exceeded, reheat treatment is required. These rivets may
be reheated as many times as desired, provided the
proper solution heat-treatment temperature is not exceeded.
The 2024-T4 rivets are stronger than the 2017-T4
and are, therefore, harder to drive. The Table 2-1.-Rivet Material Identification
Figure 2-3.-Self-plugging rivet (mechanical lock). 2017-T4 rivet is identified by the raised teat on the head, while the 2024-T4 has two raised dashes on the head.ALLOY 5056 RIVETS. These rivets are used primarily for joining magnesium alloy structures because of their corrosion-resistant qualities. They are supplied in the H32 temper (strain-hardened and then stabilized). These rivets are identified by a raised cross on the head. The 5056-H32 rivet may be stored indefinitely with no change in its driving characteristics. |
 
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